Pine Tree wind farm

Pine Tree wind farm

Al Seib / Los Angeles Times

Mark Sedlacek, left, Chuck Holloway and Ken Silver of the Los Angeles Department of Water and Power walk among the wind turbines at the Pine Tree wind farm in the Tehachapi Mountains. Wind energy farms are being approved across ridgelines used by endangered condors and federally protected eagles. Recently, renewable energy companies and federal biologists have been trying to develop technologies to prevent those birds and others from colliding with the turbine blades.

Mark Sedlacek, left, Chuck Holloway and Ken Silver of the Los Angeles Department of Water and Power walk among the wind turbines at the Pine Tree wind farm in the Tehachapi Mountains. Wind energy farms are being approved across ridgelines used by endangered condors and federally protected eagles. Recently, renewable energy companies and federal biologists have been trying to develop technologies to prevent those birds and others from colliding with the turbine blades. (Al Seib / Los Angeles Times)

Mark Sedlacek, left, Chuck Holloway and Ken Silver of the Los Angeles Department of Water and Power walk among the wind turbines at the Pine Tree wind farm in the Tehachapi Mountains. Wind energy farms are being approved across ridgelines used by endangered condors and federally protected eagles. Recently, renewable energy companies and federal biologists have been trying to develop technologies to prevent those birds and others from colliding with the turbine blades.